1. What is the Marathon Time Prediction Formula?

The marathon time prediction formula estimates your full marathon time based on your half marathon performance. It accounts for the non-linear relationship between distance and time in endurance running.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T1 \) — Your half marathon time (hours)
• \( D1 \) — Half marathon distance (typically 13.1 miles)
• \( D2 \) — Marathon distance (typically 26.2 miles)
• 1.06 — Exponent accounting for fatigue factor

Explanation: The formula predicts that marathon time increases slightly more than proportionally to distance due to accumulated fatigue.

3. Importance of Time Prediction

Details: Accurate marathon time prediction helps runners set realistic goals, plan pacing strategies, and design appropriate training programs.

4. Using the Calculator

Tips: Enter your half marathon time in hours (e.g., 1.75 for 1 hour 45 minutes), and the distances in miles. Standard distances are pre-filled.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this prediction?
A: It's reasonably accurate for well-trained runners. Actual performance depends on training, course difficulty, and conditions.

Q2: Can I use this for other distances?
A: Yes, you can compare any two distances, but accuracy may vary for very short or ultra-long distances.

Q3: Why the 1.06 exponent?
A: This accounts for the fact that running speed decreases slightly as distance increases due to fatigue.

Q4: What if my half marathon wasn't 13.1 miles?
A: You can enter the actual distance you ran for more accurate predictions.

Q5: How should I use this prediction?
A: Use it as a guideline for training and pacing, but adjust based on your specific preparation and race conditions.